Free standing hinged sign base



FIG. 1 is a perspective view of the free standing hinged sign baseshowing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side closed elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom elevational view thereof; and,

FIG. 6 is a side open elevational view thereof.

The broken lines in the drawings represent unclaimed environmentalsubject matter.

The ornamental design for a free standing hinged sign base, as shown.